# HistCount

Counts the number of pixels that exist within a specified range of greyscale values.

## HistCount Inputs

Parameter | Description
Structure | This argument must reference a spreadsheet cell containing a Histogram or ColorHist data structure.
FirstBin | Specifies the first "bin" (0 to 255; default = 0) used to define the Histogram.
LastBin | Specifies the last "bin" (0 to 255; default = 255) used to define the Histogram.

## HistCount Outputs

Returns | A value representing the pixel count, or #ERR if any of the input parameters are invalid.